Naomasa Nakai

TL;DR: In this article, the authors present observations of rotating gas near the centre of the galaxy NGC4258 (Ml06), which indicate the presence of a mass of 3.6 x 1077solar masses in a region less than 0.13 pc in radius.

TL;DR: In this paper, the influence of bar on the distribution of molecular gas in spiral galaxies using the data from a CO(1 - 0) mapping survey of 40 nearby spiral galaxies performed with the Nobeyama 45m telescope is presented.

TL;DR: In this article, the authors observed the infrared galaxy NGC 4945 using the Japanese X-ray astronomy satellite, Ginga, and found that the spectrum is composed of three components: hard X-rays emission, which is heavily absorbed by cold material with column density of about 10 24.7 cm −2 ; a soft Xray component seen in the 2-10 keV band; and an iron emission line.

TL;DR: In this article, the SIS 25-BEam Array Receiver System (BEARS) is described, which is a large focal plane array receiver system for the NRO 45 m telescope.

TL;DR: In this paper, the authors presented the first 100 pc scale view of the dense molecular gas in the central 1.3 kpc of the type-1 Seyfert NGC 1097, traced by HCN (J = 4−3) and HCO + (J= 4-3) lines afforded with ALMA band 7.